10:15 〜 10:30
▲ [18a-E302-6] Preparation of carbon based PEDOT-redox polymer electrodes by electrochemical polymerization for microbial bioelectronics
キーワード：electrochemical polymerization, redox polymer, extracellular electron transfer
A grand challenge of microbial bioelectronics[1] field is connecting electrodes with microbes that lack naturally-occurring transmembrane molecular conduits of electrons. Very recently, it has been demonstrated by Nagamine et al. that redox polymers are able to electrically wire non-electroactive bacteria to electrodes, though a robust biofilm formation by electrode surface control is yet to be achieved.[2]
Herein, we will demonstrate a novel conductive polymer coating on carbon felt (CF) electrode by electropolymerization of poly(3,4-ethylenedioxythiophene) (PEDOT) and a redox polymer (RP) to enhance current densities in microbial bioelectronic devices. PEDOT provides a large effective surface area for bacteria to attach to the electrode, and the RP is expected to not only improve the extracellular electron transfer (EET) of model organism S. oneidensis, but also the extraction of current from non-electroactive bacteria (Fig.1). Different abiotic surfaces, achieved by varying the electropolymerization methods and their parameters, can influence microbial adhesion and the number of contacting sites for interfacial charge transport will also be discussed.
Figure 1. Graphical illustration of PEDOT-RP modified CF electrode
Reference:
[1] Tseng C P, Liu F, Zhang X, et al. Advanced Materials, 2022, 34(13): 2109442.
[2] Ueki A., Nagamine K. et al, Electrochemical Society of Japan (ECSJ) Fall meeting 2022.
Herein, we will demonstrate a novel conductive polymer coating on carbon felt (CF) electrode by electropolymerization of poly(3,4-ethylenedioxythiophene) (PEDOT) and a redox polymer (RP) to enhance current densities in microbial bioelectronic devices. PEDOT provides a large effective surface area for bacteria to attach to the electrode, and the RP is expected to not only improve the extracellular electron transfer (EET) of model organism S. oneidensis, but also the extraction of current from non-electroactive bacteria (Fig.1). Different abiotic surfaces, achieved by varying the electropolymerization methods and their parameters, can influence microbial adhesion and the number of contacting sites for interfacial charge transport will also be discussed.
Figure 1. Graphical illustration of PEDOT-RP modified CF electrode
Reference:
[1] Tseng C P, Liu F, Zhang X, et al. Advanced Materials, 2022, 34(13): 2109442.
[2] Ueki A., Nagamine K. et al, Electrochemical Society of Japan (ECSJ) Fall meeting 2022.